MajorMagee, no it is a different issue. Dual Pass render turned on breaks the model drawing, not the sky. And by the look of the screenshot I think my DX9 mod is not even used.
What you see here is a WOFF bug with some weather files - try selecting broken clouds in the quick combat. I think it is going to be fixed in the next update, but I can't officially comment it as I'm not a developer
And that one is a completely different from two above mentioned issues
It is the sun glare applied incorrectly by the CFS3 engine - behind the horizon, not in front of it, so the horizon stays dark while the sky is very bright. I think there's no way to fix it in the stock renderer, but I want to fix it someday in my DX9 one.